Spark plug extender



FIG. 1 is a perspective view a sparkplug extender showing my new design;

FIG. 2 is a side view thereof, all side views being the same except for the appearance of the bottom portion;

FIG. 3 is a top view thereof, including a top contact post centered within an insulator; and,

FIG. 4 is a bottom view thereof, including a rubber insulating boot surrounding a lower contact. 

The ornamental design for a spark plug extender, as shown and described. 